be at grips with

例句：

1. 1. The team is at grips with the task of reconstructing the city's infrastructure.
   该团队正在密切处理重建城市基础设施的任务。
2. 2. The scientist was at grips with his research for hours on end.
   这位科学家连续几个小时都在研究上。
3. 3. The two countries are at grips with each other over the issue of trade.
   这两个国家因贸易问题而相互对抗。